Nice logic level, although not sure I solved in the right way... Thanks! Spoiler: Designed way? Summary: R gets on top of Zap. Then R goes on top of R-Pillar and win.
Trickier than initially thought. I didn't take @chemi 's way. Spoiler R woudn't step on the win from pillar-R. Instead I got him on zapper-R, and pushed the two with pillar-R from the movable closest to the win onto the grass. Only way I saw to make zapper-R walk the correct way.
@Block builder Spoiler if you touch R-Pillar having R on top with the draggable, R climbs to the win. I did it several times.